Weather seal and method of making same

Abstract

Standard weather stripping composed of a backing strip and a pile body projecting from one face of the backing strip is guided into a channel having a pair of spaced apart side walls and a bottom wall. Also guided into that channel and positioned against the side of the pile body is an impervious resilient film barrier which extends from the top of the pile body down to the base thereof and across the adjacent side edge margin of the backing strip. The channel side walls are clinched against the bottom wall thereby capturing the weather stripping between those walls and bending the film barrier adjacent the base of the pile body so that the resiliency of the barrier tends to bias the portion of the barrier projecting out of the channel against the pile body so that it remains in an erect position and prevents moisture and drafts from penetrating into the pile body.

I claim: 
     
       1. A weather seal comprising A. a backing strip,   B. a pile body projecting up from one face of the backing strip,   C. a flexible resilient film barrier positioned against at least one side of the pile body, the upper edge of the barrier being more or less even with the top of the pile body, the lower edge margin of the film extending down to the base of the pile body and across an edge margin of the backing strip, and   D. a channel engaged around the backing strip, said channel having a pair of side walls which overlie the opposite edge margins of the backing strip and a bottom wall engaging under that strip, said channel side walls being clinched against the channel bottom wall so that the backing strip and barrier lower edge margin are gripped tightly, with the barrier being bent adjacent the base of the pile body but tending to resume its normal unstressed flat condition, so that the barrier portion extending out of the channel is biased against the pile body so that it remains in an upstanding erect position adjacent that body.   
     
     
       2. The weather seal defined in claim 1 wherein the edge of the channel side wall adjacent the barrier is beveled where it engages the barrier. 
     
     
       3. The weather seal defined in claim 1 wherein said channel includes a longitudinal mounting fin projecting from its bottom wall. 
     
     
       4. The weather seal defined in claim 1 wherein the edge margins of the backing strip are free of pile. 
     
     
       5. A weather seal comprising A. a channel having a bottom wall and a pair of spaced-apart side walls,   B. a weather strip including a backing strip and an upstanding pile body, said weather strip being positioned in the channel with its side edges disposed between the channel side walls and the channel bottom wall and with its pile body projecting up out of the channel, and   C. a resilient film barrier positioned flush against one side of the pile body, the upper edge of said film barrier being more or less even with the top of the pile body, the lower edge margin of the film barrier extending down to the base of the pile body and across the adjacent side edge margin of the weather strip, the channel side walls being clinched against the channel bottom wall so as to grip the weather strip between them and so as to bend the film barrier adjacent the base of the pile body whereby, because of its resilience, the barrier tends to resume its unstressed flat condition so that the portion of the film barrier projecting out of the channel is biased against the pile body so that it remains in an upstanding erect position against that body.   
     
     
       6. The method of making a weather seal comprising the steps of A. continuously roll-forming a channel having a pair of spaced-apart side walls and a bottom wall,   B. continuously guiding weather stripping composed of a backing strip and a pile body projecting from the backing strip into the channel so that the side edge margins of the backing strip are positioned between the side and bottom walls of the channel,   C. continuously guiding a resilient film barrier into position against one side of the pile body so that the upper edge of the barrier is located more or less even with the top of the pile body and the lower edge margin of the barrier extends down to and across the adjacent side edge margin of the backing strip, and   D. continuously clinching the side walls of the channel against the channel bottom wall so as to grip the weather strip between those walls and so as to bend the film barrier adjacent the base of the pile body so that the resilience of the barrier tends to bias the portion of the barrier projecting out of the channel against the pile body so that it remains in an upstanding erect position against that body.